1、#include unsigned char code table=0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71; unsigned char temp; unsigned char key; unsigned char i,j; unsigned char STH0; unsigned char STL0; unsigned int code tab=64021,64103,64260,64400, 64524,64580,64684,64777, 64820,64898,
2、64968,65030, 65058,65110,65157,65178; void main(void) TMOD=0x01; ET0=1; EA=1; while(1) P3=0xff; P3_4=0; temp=P3; temp=temp if (temp!=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P3; temp=temp if (temp!=0x0f) temp=P3; temp=temp switch(temp) case 0x0e: key=3; break; case 0x0d: key=2; break; case 0x0b:
3、 key=1; break; case 0x07: key=0; break; temp=P3; /多 P1_0=P1_0; P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; TR0=1; temp=temp while(temp!=0x0f) temp=P3; temp=temp TR0=0; P3=0xff; P3_5=0; temp=P3; temp=temp if (temp!=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P3; temp=temp if (temp!=0x0f) temp=P3;
4、 temp=temp switch(temp) case 0x0e: key=7; break; case 0x0d: key=6; break; case 0x0b: key=5; break; case 0x07: key=4; break; temp=P3; /多 P1_0=P1_0; P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; TR0=1; temp=temp while(temp!=0x0f) temp=P3; temp=temp TR0=0; P3=0xff; P3_6=0; temp=P3; temp=temp if (temp!
5、=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P3; temp=temp if (temp!=0x0f) temp=P3; temp=temp switch(temp) case 0x0e: key=11; break; case 0x0d: key=10; break; case 0x0b: key=9; break; case 0x07: key=8; break; temp=P3; /多 P1_0=P1_0; P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; TR0=1; temp=temp whi
6、le(temp!=0x0f) temp=P3; temp=temp TR0=0; P3=0xff; P3_7=0; temp=P3; temp=temp if (temp!=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P3; temp=temp if (temp!=0x0f) temp=P3; temp=temp switch(temp) case 0x0e: key=15; break; case 0x0d: key=14; break; case 0x0b: key=13; break; case 0x07: key=12; break; temp=P3; /多 P1_0=P1_0; P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; TR0=1; temp=temp while(temp!=0x0f) temp=P3; temp=temp TR0=0; void t0(void) interrupt 1 using 0 TH0=STH0; TL0=STL0; P1_0=P1_0;
